I finally started to insulate my garage. As of today, the front half is done; insulated, vapor barrier, sheetrock. Due to the logistics of moving so much "stuff" around, the back half may wait until next year when I build a shed.
My point here is the color of the walls. I'm sure others are working in an unfinished garage or shed. The walls are 2x's with the inside of the sheathing or siding facing you. It is dark and reflects little light. When I put the white foam insulation in place, I was amazed at how much brighter the shop was. So, I put up sheetrock, but did not tape or plaster it, just put on a coat of white primer. I just makes it much better working with the same lighting that I've had all along.
If you are working in an unfinished area, do yourself a favor and buy a gallon or two of white or very light colored paint. Ed snipped-for-privacy@snet.net