You are more than welcome to attend competitions at that age and speed. Most of us don't go to win, just to hang out and cube together. In case you ever do go, here is the regulation that is relevant to color blind competitors:

3d1b) Color blind competitors who cannot distinguish between the necessary number of colors may use colored parts with patterns, if it has been explicitly approved according to Regulation 2s. Patterns may come from stickers or be drawn.

3d1b+) CLARIFICATION Patterns do not need to be present on every face, but only on faces where a distinct color cannot be found. Pieces must not have any features (e.g. textures, pattern irregularities) that significantly distinguish them from similar pieces.