Strawberry leaves are turning red

[oggy]

I've noticed that all of my outdoor strawberry plants have had their leaves turn dark green, and finally a red color.

What's up with this? Are they goners?

[RogueRose]

Are all of them red or only some? It is common, I find for the "bottom" or leaves that don't get enough light to turn red.

[oggy]

I should correct myself, not all of my plants are doing it apparently. Only a few that were recently up potted.
The new growth seem to be green, still. But the older, longer, most exposed leaves have a red tint to them. When it brightens up outside, I'll snap some pictures.