Great - thank you. I think a solid color covering the Start/Select/Option/Help/Reset text would be acceptable. Better than not having anything at all. Also, some options to consider:
1. Have a hole for the power light
2. Inscribe Start, Select, Option, Help, and Reset in the plastic since the original text will not be visible underneath (original text might be too small to fit, so might make sense to truncate as "ST, SE, OPT, RST, HLP", etc... or it might sense to put the full text at a 45-degree angle.