Change text color using Javascript

let textA = null;

runOnStartup(async runtime =>
{
	// Code to run on the loading screen.
	// Note layouts, objects etc. are not yet available.
	runtime.addEventListener("beforeprojectstart", () => OnBeforeProjectStart(runtime));
});

async function OnBeforeProjectStart(runtime)
{
	// Code to run just before 'On start of layout' on
	// the first layout. Loading has finished and initial
	// instances are created and available to use here.
	textA = runtime.objects.A.getFirstInstance();

	runtime.addEventListener("tick", () => Tick(runtime));

}

function Tick(runtime)
{
	// Code to run every tick
	textA.colorRgb = (255, 0, 0);
}