diff --git a/coordinator/startup.lua b/coordinator/startup.lua
index 6283cb0..6c26267 100644
--- a/coordinator/startup.lua
+++ b/coordinator/startup.lua
@@ -16,7 +16,7 @@ local config       = require("coordinator.config")
 local coordinator  = require("coordinator.coordinator")
 local renderer     = require("coordinator.renderer")
 
-local COORDINATOR_VERSION = "alpha-v0.4.7"
+local COORDINATOR_VERSION = "alpha-v0.4.8"
 
 local print = util.print
 local println = util.println
diff --git a/coordinator/ui/layout/unit_view.lua b/coordinator/ui/layout/unit_view.lua
index 412680e..52fcbce 100644
--- a/coordinator/ui/layout/unit_view.lua
+++ b/coordinator/ui/layout/unit_view.lua
@@ -291,7 +291,7 @@ local function init(monitor, id)
     ---@fixme test code
     local rps = true
     local function _test_toggle()
-        rps_nof.update(rps)
+        rps_trp.update(rps)
         rps = not rps
         tcallbackdsp.dispatch(0.25, _test_toggle)
     end
diff --git a/graphics/elements/indicators/trilight.lua b/graphics/elements/indicators/trilight.lua
index df09e51..9d8731e 100644
--- a/graphics/elements/indicators/trilight.lua
+++ b/graphics/elements/indicators/trilight.lua
@@ -19,9 +19,9 @@ local element = require("graphics.element")
 ---@return graphics_element element, element_id id
 local function tristate_indicator_light(args)
     assert(type(args.label) == "string", "graphics.elements.indicators.trilight: label is a required field")
-    assert(type(args.c1) == "integer", "graphics.elements.indicators.trilight: c1 is a required field")
-    assert(type(args.c2) == "integer", "graphics.elements.indicators.trilight: c2 is a required field")
-    assert(type(args.c3) == "integer", "graphics.elements.indicators.trilight: c3 is a required field")
+    assert(type(args.c1) == "number", "graphics.elements.indicators.trilight: c1 is a required field")
+    assert(type(args.c2) == "number", "graphics.elements.indicators.trilight: c2 is a required field")
+    assert(type(args.c3) == "number", "graphics.elements.indicators.trilight: c3 is a required field")
 
     -- single line
     args.height = 1
@@ -30,9 +30,9 @@ local function tristate_indicator_light(args)
     args.width = math.max(args.min_label_width or 1, string.len(args.label)) + 2
 
     -- blit translations
-    local c1 colors.toBlit(args.c1)
-    local c2 colors.toBlit(args.c2)
-    local c3 colors.toBlit(args.c3)
+    local c1 = colors.toBlit(args.c1)
+    local c2 = colors.toBlit(args.c2)
+    local c3 = colors.toBlit(args.c3)
 
     -- create new graphics element base object
     local e = element.new(args)