Tartan eyes

Someone has told me I have tartan eyes but I was too embarassed to ask what he meant

Tartan is a Scottish plaid as seen above.
I did see an expression "as seen through tartan eyes" but I couldnt discern the meaning.

Main Entry: tar·tan
Pronunciation: 'tär-t&n
Function: noun
Etymology: probably from Middle French tiretaine linsey-woolsey
Date: circa 1500
1 : a plaid textile design of Scottish origin consisting of stripes of varying width and color usually patterned to designate a distinctive clan
2 a : a twilled woolen fabric with tartan design b : a fabric with tartan design
3 : a garment of tartan design

Wow! If I were to say that to a Scottish lass with crisp, sparkling blue/green eyes and red hair, my wife would fell me in one fatal stroke.