More often than not, when you visit something with a name like “the blue forest” or “the purple mountains”, they’re not really blue or purple, are they. OK so there may be a hint of the colour which gives the place its moniker, but you would never call it vivid. Until, that is, you visit the Lugano Rosa, the “pink lake”, just outside the town of Torrevieja, which is properly, undeniably pink. It’s rental car time again as we look to fully explore the next section of Spanish coastline and head down into Andalucia, driving south from Alicante and taking a detour specifically to see whether this lake really is…