Yes, now it's crimson and was vermillion, but note how the crimson was already used by PRL since the 80's and vermillion was used by the interwar Poland too. So both colours has been used by both communists and fascists.
This "joke" is touchy for me. My country went through suffering not too dissimilar from colonialism. No matter of my country being part of the imperial bloc now, I as a communist am proud of my fore-fathers resisting this oppression, and even helping Haiti win it's independence.
There was nothing good that came out of partitions, and even now today that period is being used and abused by our right wing propaganda to fuel xenophobia.
I find this "joke" reactionary and hope you can do better next time. You can be critical of Poland in other and more relevant ways, but this ain't it.
Best I can do now is make you photos of my copies I have in the first volume of their selected works. Unfortunately all's in Polish.
I hope some translation tool out there helps you with this, otherwise I wish you luck on finding something in English.
Edit: it seems it's all out of order... Fuck, I'm too lazy to fix it now.
Edit 2: Turns out I'm a tired idiot. The links aren't the speech I meant, the 17th anniversary of 1830 is the wrong one and the links should've pointed to the second anniversary of the Cracov uprising which is the one photographed. Apologies, will leave the links as they are though.