Yeah, you need to use specify a colour 3 type. There’s color3.fromRGB(), color3.new, color3.fromHSV()
In this case, you would need to use color.fromRGB() which limits the colour of R, G & B by 255 or color3.new() which limits the each color3 value to 1. 500 is not possible through RGB or color3.new(), lower the value.
Also, you’ve spelt ExposureCompensation wrong, should be ExposureCompensation.
Color3.new() or Color3.FromRGB() Color3.new() is a propertie of a textlabel, textbox, textbutton etc, you can select a color from a random textlabel and copy the 3 numbers.