Blues are slower. For crimson pouches, you can spam click the obelisk and it will automatically bring up the correct page, with the scroll already selected, and you can just press spacebar. For blue charm pouches, it will not automatically select the scroll to make. you have to click through the scroll interface first to the tab of blue charm pouches, and then click on the scroll you want to make before pressing spacebar. You can also right click use pouch on obelisk, and it will select the right tab, but not the scroll. Therefore, blue charms are significantly slower than crimson charms because you cannot just spamclick the obelisk to make scrolls.