This is a home bred mini windowsill type sized tomato plant, a little bit quirky to look at, but the taste was very good. Although a small plant the fruit was comparatively large in size with an equally big tomato flavour. The black-purple colour is caused by a gene in the tomato which produces Anthocyanin in the skin, usually in response to exposure to sunlight and gives it this gorgeous colour to the tomatoes. This appears to be a dominant trait with many offspring of a Blue/Antho crossed to another variety carrying the genes for this trait. These pictures are the F4 generation.
These plants are also 'Woolly', which means they carry a gene which gives them this furry or woolly appearance.
The fruit is striped although it's an unusual pattern and colour combination, I don't know if it is because it is a segregating variety? I'll be keeping an eye out for similar types in the next generation.