A few more modern examples....

Here, the gentleman on the left is the chief of the Clan MacLea (Livingston) and is wearing a day plaid, while the gentleman on the right is wearing a fly plaid.


The chief of Clan Farquharson.


Cameron of Locheil. Note his plaid is a different tartan than his kilt, though both are Cameron tartans.


A gathering of Clan Donald chiefs. Note some of the plaids are matching the kilt, some are not. All are MacDonald tartans.