Pale yellow is cheerful. When you do the lights, check out what type of bulbs simulate sunlight, and put some in there, too. I assume you'll need to make sure your fabric is away from that type of light (I'd ask questions about that at the lighting store), but it would be worth it. Here in Oregon we get so much rain, and have so many days that are overcast that many suffer from the light deprivation (not me, though).