tweak(menu colors): typecheck using assert

[Mathu-lmn]

[Mathu-lmn]

@manups4e Can you check this ? :eyes:

[manups4e]

instead of checking if it's a table.. you can check by doing

assert(color() == "SColor", "Color must be SColor type")

because checking if it's a table means that i could send any table.. too generic.. check here https://github.com/manups4e/ScaleformUI/blob/master/ScaleformUI_Lua/src/Elements/SColor.lua on line 3

[manups4e]

if you correct this i will merge <3

[Mathu-lmn]

should be good