What kind of colour is "Chartreuse" anyway?!

When the designer Clare suggested we paint the side of the building "chartreuse" I cautiously agreed... mainly because her recommendations up too that point in time had been impeccable so the trust level was high... but to be honest, it was also because, before she then pulled out a swatch to show me, I had no bloody idea what colour chartreuse was & I didn't want to appear too ignorant! 

Yes, as you can see it is Sunday & so I am painting... again. (And yes, in response to somebody who asked,  yes, I AM really doing a lot of the painting myself!).  You can see what colours I used today on my hands! I joked to my father last weekend that "you can the pick the amateur around here... the one the paint all over his hands!"  The Grey is from the finishing coat on the front, back & side walls; the Yellow... is actually "Chartreuse" (see above: & I can't believe you didn't know that already!) & the Green (the slightly overripe avocado green you may recall I have dubbed it!) is from painting some of the guitar hangers in the acoustic room.  Next?  An Illy coffee at Cafe Cafe in Subi... but then I'm afraid I've some old branches off an almond tree to cut up & some lawn to dig up at home!