Linking a particular tartan to a specific clan is a modern concept. It only became popular in the early 1900's, and was driven by commercial gain.
When Scots wore the kilt as normal dress, the only things that determined what colours were worn was what dyes were available in their area at the time, and what they could afford.
So it's really your own personal choice. If you want to wear a tartan linked to a surname then you're obviously free to do so, but you should be aware that it has no historical relevance whatsoever.
In battle, Highlands clans often attached symbols to their clothes to identify themselves. Sprigs of juniper, or heather were common examples.