function colourswap1 (block) {
      block.style.background='#fafafa';
      block.style.border='1px solid #e5e6e7';
      block.style.color='#807f7e';
}
function colourswap2 (block) {
      block.style.background='#fde1e7';
      block.style.border='1px solid #ec1a68';
      block.style.color='#606060';
}