I know that I've used a lot of colors in this Arcade Treads Blanket.
You don't necessarily need to use this many if you want to tone down the arcade neon feel. You could even stick with only two colors and the blanket will be just as great.
Because I need to get these blankets finished so quickly, it's a small throw size, like a lapghan. You can make it any size you like, though. You aren't governed by my self-imposed deadline of one pattern
per week.
Use the stitch count to increase the row length and then simply crochet until you get to the row count you would like. Or, maybe you would like to simply use a heavier weight yarn to make everything a size up. It's all up to you.