Fall approaches cautiously...

 green plaid ankle pants - I think this is pretty close to Black Watch tartan...

Green quilted bag

Green glitter jelly sandals

Teal squarish sunglasses

Aqua sunglasses

Retro round green frame sunglasses

Retro round green frame eyeglasses

teamed with these Miista purple holographic shoes...

 and these plum / burgundy / maroon plaid pants that also look like actual tartan!

definitely these retro cool cranberry red sunglasses...

these very autumnal deep plum sunglasses will be a match...

as would this studded burgundy satchel / crossbody shoulder bag...

 and they could be dressed up with these burgundy slingbacks...

or dressed down with these burgundy oxfords...

and these pretty classic-looking navy pinstripe pants...

Midnight Magic glitterpuss shoes...

this ribbed teal tee / sweater top...

maybe to be teamed with this ivory cableknit jumper and cream fossil cross body bag...

Love the idea of a navy pinstripe coatdress too! Autumn -- bring it on...