Recently planted Coleus Blumei seeds from two different sources, I've separated them by made-up strain names, Aztec and Mutant. Germination was quick taking a few days to pop up, lighting is indirect so some colour loss is expected.
A couple of weeks in and they are already showing their differences in pattern and colour, the Aztec strain developed it almost immediately after the first true set of leaves appeared, whereas the mutant strain took a fair while longer.
Snapshots will be taken at approximately 2 weeks apart,
Aztec Strain, Coleus Blumei
Mutant Strain, Coleus Blumei