Before the demise of KLMuk/Buzz, there were constant rumours that the ATRs would get a yellow and purple paint job, and be put on the short Buzz sectors (STN-AMS, STN-CDG).
Operationally they are a very cost effective a/c. However it never came into being, due to the fixed costs: the leases were so expensive it was actually cheaper to keep them grounded rather than operate them.
Hopefully Oniva will get a far better financing deal than KLMuk had.