Im a big beleiver in the ‘park test’ for names
Basically how comfortable you are in shouting your dogs name at the top of your voice to get him/her to come back to you
On that basis Im not sure I could run with Colin and Im out
I have the same test for children – it called the supemarket test and basically it meant calling my first born Stanley (the wifes choice) was a non starter for me- we settled on fi fi trixie bell instead!