I bought mine in Feb 2020, thought it was trophy blue too, about a month later found out it was a much rarer colour than JFV by searching the paint code JGY! so that's a nice bonuswhen i bought my car i actually thought it was trophie blue at 1st but when i pulled along side 1 u could tell. i didnt know that the colour was rare. it stood out from the other tf's in the showroom where i was at. as there where dark blue and green but only the 1.6. that he was trying to sell me
Mica Blue was the paint manufacturers name for it - in much the same way that 'Xirallic Red' was the paint manufacturers name for Firefrost, and 'Obsidian' the paint manufacturers name for XPower Grey (which MG Rover called Tempest Grey in the Rover paint pallette)..... it's also called Mica Blue.
How did ou find what number yours is out of 467, I'd like to do the same with my TF in JGYPaint code of my Ignition blue TF 135 is JGY, it's also called Mica Blue. According to MG Rover Build info 467 TFs were built in this colour mine being the 271st. Approximately 1% of all TFs made were Ignition blue.
It's a great colour and mine has had lots of positive comments.