These mittens are great for both teenagers and adults and can be transformed totally by mixing up the colours. I have used a light basic colour for the base and added bright detail colours, but this could easily be swopped around for maximum effect.
The slip stitch detail is so easy as you only use one colour per row, a pair can easily be knitted up in a weekend.
These mittens are a great stash buster as less than 10g each of the detail colours are required.