I was checking out some of the competition earlier this month, and I found Planka. It’s don’t have close to the features of Vikunja, and development may have stalled on it, but it sure looks nice.
It made me realize more often than not, I don’t want a picture background, I just want a solid colour or a gradient at most. The background in those screenshots is very pleasing to my eyes. Planka takes the concept of a board’s colour and applies it all over, not just to the dot on the left, which I also like – it makes the different boards easier to distinguish from one another at a glance.