diff --git a/coordinator/startup.lua b/coordinator/startup.lua
index 83d31c1..4d06b3d 100644
--- a/coordinator/startup.lua
+++ b/coordinator/startup.lua
@@ -22,7 +22,7 @@ local sounder     = require("coordinator.sounder")
 
 local apisessions = require("coordinator.session.apisessions")
 
-local COORDINATOR_VERSION = "v1.0.12"
+local COORDINATOR_VERSION = "v1.0.13"
 
 local println = util.println
 local println_ts = util.println_ts
diff --git a/coordinator/ui/components/process_ctl.lua b/coordinator/ui/components/process_ctl.lua
index 4c69b87..d1ca1b0 100644
--- a/coordinator/ui/components/process_ctl.lua
+++ b/coordinator/ui/components/process_ctl.lua
@@ -241,7 +241,7 @@ local function new_view(root, x, y)
     -------------------------
 
     local ctl_opts = { "Monitored Max Burn", "Combined Burn Rate", "Charge Level", "Generation Rate" }
-    local mode = RadioButton{parent=proc,x=34,y=1,options=ctl_opts,callback=function()end,radio_colors=cpair(colors.white,colors.black),radio_bg=colors.purple}
+    local mode = RadioButton{parent=proc,x=34,y=1,options=ctl_opts,callback=function()end,radio_colors=cpair(colors.gray,colors.white),select_color=colors.purple}
 
     mode.register(facility.ps, "process_mode", mode.set_value)
 
@@ -335,7 +335,7 @@ local function new_view(root, x, y)
 
     status.register(facility.ps, "current_waste_product", status.update)
 
-    local waste_prod = RadioButton{parent=rect,x=2,y=3,options=style.waste.options,callback=process.set_process_waste,radio_colors=cpair(colors.white,colors.black),radio_bg=colors.brown}
+    local waste_prod = RadioButton{parent=rect,x=2,y=3,options=style.waste.options,callback=process.set_process_waste,radio_colors=cpair(colors.gray,colors.white),select_color=colors.brown}
     local pu_fallback = Checkbox{parent=rect,x=2,y=7,label="Pu Fallback",callback=process.set_pu_fallback,box_fg_bg=cpair(colors.green,colors.black)}
 
     waste_prod.register(facility.ps, "process_waste_product", waste_prod.set_value)
diff --git a/coordinator/ui/components/unit_detail.lua b/coordinator/ui/components/unit_detail.lua
index fe98727..fb1eccd 100644
--- a/coordinator/ui/components/unit_detail.lua
+++ b/coordinator/ui/components/unit_detail.lua
@@ -476,7 +476,7 @@ local function init(parent, id)
 
     local ctl_opts = { "Manual", "Primary", "Secondary", "Tertiary", "Backup" }
 
-    local group = RadioButton{parent=auto_div,options=ctl_opts,callback=function()end,radio_colors=cpair(colors.blue,colors.white),radio_bg=colors.gray}
+    local group = RadioButton{parent=auto_div,options=ctl_opts,callback=function()end,radio_colors=cpair(colors.gray,colors.white),select_color=colors.purple}
 
     group.register(u_ps, "auto_group_id", function (gid) group.set_value(gid + 1) end)
 
diff --git a/graphics/elements/controls/radio_button.lua b/graphics/elements/controls/radio_button.lua
index 8c2d3ec..33a65d5 100644
--- a/graphics/elements/controls/radio_button.lua
+++ b/graphics/elements/controls/radio_button.lua
@@ -1,13 +1,15 @@
 -- Radio Button Graphics Element
 
+local util    = require("scada-common.util")
+
 local core    = require("graphics.core")
 local element = require("graphics.element")
 
 ---@class radio_button_args
 ---@field options table button options
 ---@field callback function function to call on touch
----@field radio_colors cpair colors for radio button center dot when active (a) or inactive (b)
----@field radio_bg color background color of radio button
+---@field radio_colors cpair radio button colors (inner & outer)
+---@field select_color color color for radio button border when selected
 ---@field default? integer default state, defaults to options[1]
 ---@field min_width? integer text length + 2 if omitted
 ---@field parent graphics_element
@@ -24,6 +26,8 @@ local function radio_button(args)
     assert(type(args.options) == "table", "graphics.elements.controls.radio_button: options is a required field")
     assert(#args.options > 0, "graphics.elements.controls.radio_button: at least one option is required")
     assert(type(args.callback) == "function", "graphics.elements.controls.radio_button: callback is a required field")
+    assert(type(args.radio_colors) == "table", "graphics.elements.controls.radio_button: radio_colors is a required field")
+    assert(type(args.select_color) == "number", "graphics.elements.controls.radio_button: select_color is a required field")
     assert(type(args.default) == "nil" or (type(args.default) == "number" and args.default > 0),
         "graphics.elements.controls.radio_button: default must be nil or a number > 0")
     assert(type(args.min_width) == "nil" or (type(args.min_width) == "number" and args.min_width > 0),
@@ -56,21 +60,16 @@ local function radio_button(args)
         for i = 1, #args.options do
             local opt = args.options[i] ---@type string
 
+            local inner_color = util.trinary(e.value == i, args.radio_colors.color_b, args.radio_colors.color_a)
+            local outer_color = util.trinary(e.value == i, args.select_color, args.radio_colors.color_b)
+
             e.w_set_cur(1, i)
 
-            if e.value == i then
-                -- show as selected
-                e.w_set_fgd(args.radio_colors.color_a)
-                e.w_set_bkg(args.radio_bg)
-            else
-                -- show as unselected
-                e.w_set_fgd(args.radio_colors.color_b)
-                e.w_set_bkg(args.radio_bg)
-            end
-
+            e.w_set_fgd(inner_color)
+            e.w_set_bkg(outer_color)
             e.w_write("\x88")
 
-            e.w_set_fgd(args.radio_bg)
+            e.w_set_fgd(outer_color)
             e.w_set_bkg(e.fg_bg.bkg)
             e.w_write("\x95")