Variation of 7 Vul in the U − B vs. B − V diagram. Also shown for comparison are the variations of another Be star observed at Hvar: QR Vul. Data from individual observing stations listed in Table 2 are shown by coloured circles as follows: 01: black; 10: red; 13: open black circles; 42: magenta; 112: blue; 113: green. We note that the peculiar behavior of observations from station 13 might be due to variability of the comparison star V395 Vul, and not variability of 7 Vul itself.